Fig. 2From: Self-administered electroencephalography-based sleep assessment: compliance and perceived feasibility in children and adultsSleep assessment set-up. Image A shows the elastic belt (1), the custom-made elastic pocket (2), the Zmachine (3) and the cable from the Zmachine (4). Image B shows the signal sensors at the differential mastoids (5) and the ground sensor on the middle of the neck (6)Back to article page